添加Y-Li-Ca系统的AlN陶瓷的低温烧结  

Low-Temperature Sintering of Y-Li-Ca-Doped AlN Ceramics

作　　者：徐笑雷[1] 李文兰[1] 庄汉锐[1] 徐素英[1] 李敏中 

机构地区：[1]中国科学院上海硅酸盐研究所,上海200050

出　　处：《无机材料学报》1999年第1期175-179,共5页Journal of Inorganic Materials

摘　　要：本文探索了以自蔓延高温（SHS）法合成并经抗水化处理的AlN粉为原料，添加YLiO_2－CaF_2／YLiO_2－CaCO_3的AlN陶瓷的低温烧结.研究表明，YLiO_2－CaF_2／YLiO_2－CaCO_3是有效的低温烧结助剂，添加5wt％YLiO_2和0．5wt％CaF_2。，在1675℃下保温6h可得到密度为3．29g／cm3、热导率为97w／m.K的中等性能的AlN陶瓷.同时对YLiO_2-CaF2、YLiO_2－CaCO3两种添加剂系统进行了对比研究．结果表明，在同样的烧结条件下，前者对AlN陶瓷的低温烧结更为有利．The paper studied low-temperature sintering of Y-Li-Ca-Doped anti-hydrolysis AIN powderssynthesized by SHS method. It is found that Y-Li-Ca additive systems are beneficial for lowtemperature sintering of AIN ceramics. AlN samples with density of 3.29g/cm3 and thermalconductivity of 97 W/m.K were obtained after sintering at 1675℃ for 6 h with the additionsof 5wt% YLio2 and 0.5wt% CaF2. The work also indicates that YLiO2-CaF2 is better for lowtemperature signering of AIN than YLiO2-CaCO3 under the same sintering conditions.

关 键 词：低温烧结 热导率 氮化铝陶瓷 陶瓷 Y-Li-Ca系统 

分 类 号：TQ174.758[化学工程—陶瓷工业]